Back Door Entry Lock and Unlock Functions do not Operate: Procedure

1. When the door control switch on the multiplex network master switch assembly is operated, check that the doors lock according to switch operation. Refer to OPERATION CHECK .

   OK

   Door locks operate normally.

NG → See step   8 

OK: Go to next step 

1. Bring the electrical key transmitter sub-assembly near the electrical key antenna (outside luggage), and perform an entry back door open and entry lock functions check.
   Fig 1: Identifying Distance Of Electrical Key Transmitter Sub-Assembly To Electrical Key Antenna (Outside Luggage)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *a	Vehicle center
   *b	Approximately 0.3 m (0.98 ft.)

   NOTE:

   If the key is brought within 0.2 m (0.656 ft.) of the rear bumper, communication is not possible.

   HINT: 

   • When the electrical key transmitter sub-assembly is brought near the electrical key antenna, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
   • If the operation is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation.

   OK

   Entry functions operate normally.

NG → See step   3 

OK → AFFECTED BY WAVE INTERFERENCE 

1. Inspect the back door outside handle sub-assembly. Refer to INSPECTION .

NG → See step   11 

OK: Go to next step 

1. Disconnect the back door outside handle sub-assembly connector.
   Fig 2: Measuring Resistance Of Back Door Outside Handle Sub-Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L4-2 (L) - Body ground	Always	Below 1 Ω
   L4-3 (E) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Back Door Outside Handle Sub-assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Check the following antennas in the key diagnostic mode. Refer to OPERATION CHECK .
   1. Check the electrical key antenna (outside luggage):
      Fig 3: Identifying Distance Of Electrical Key Transmitter Sub-Assembly To Electrical Key Antenna (Outside Luggage)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION
      
      

      *a	Vehicle center
      *b	0.7 to 1.0 m (2.30 to 3.28 ft.)

      When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the electrical key antenna (outside luggage), check that the wireless door lock buzzer sounds.

      OK

      Wireless door lock buzzer sounds.

NG → See step   6 

OK → See step   10 

1. Disconnect the C20 certification ECU (smart key ECU assembly) connector.
2. Disconnect the G29 electrical key antenna (outside luggage) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C20-19 (CLG8) - G29-1 (ANTE8)	Always	Below 1 Ω
   C20-20 (CG8B) - G29-2 (CLGB)	Always	Below 1 Ω
   C20-19 (CLG8) or G29-1 (ANTE8) - Body ground	Always	10 kΩ or higher
   C20-20 (CG8B) or G29-2 (CLGB) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Inspect the electrical key antenna (outside luggage). Refer to INSPECTION .

NG → See step   12 

OK → See step   9